National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Hyannis, Barnstable Municipal-Boardman Airport (KHYA)

Lat: 41.67°NLon: 70.27°WElev: 49ft.

Fog/Mist

39°F

4°C

Humidity 96%
Wind Speed E 6 mph
Barometer 30.45 in (1031.3 mb)
Dewpoint 38°F (3°C)
Visibility 2.00 mi
Wind Chill35°F (2°C)
Last update 3 Apr 12:56 am EDT
Extended Forecast for

South Dennis MA

  • Overnight

    Overnight: A slight chance of showers. Patchy fog. Otherwise, cloudy, with a low around 37. Light east wind. Chance of precipitation is 20%.

    Low: 37 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Friday

    Friday: Patchy fog before 5pm. Otherwise, cloudy, with a high near 54. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.

    High: 54 °F

    Patchy Fog

  • Friday Night

    Friday Night: Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 42. Southwest wind around 10 mph, with gusts as high as 25 mph.

    Low: 42 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 51. West wind 6 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.

    High: 51 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: A chance of showers, mainly after 10pm. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 7 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers. High near 54. Southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.

    High: 54 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 38. West wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely between 7am and 8am. Mostly sunny, with a high near 49. West wind around 9 mph. Chance of precipitation is 60%.

    High: 49 °F

    Showers
    Likely then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36. West wind around 6 mph.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers. Patchy fog. Otherwise, cloudy, with a low around 37. Light east wind. Chance of precipitation is 20%.
Friday
Patchy fog before 5pm. Otherwise, cloudy, with a high near 54. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 42. Southwest wind around 10 mph, with gusts as high as 25 mph.
Saturday
Patchy fog between 9am and 10am. Otherwise, partly sunny, with a high near 51. West wind 6 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 21 mph.
Saturday Night
A chance of showers, mainly after 10pm. Patchy fog. Otherwise, cloudy, with a low around 38. East wind around 7 mph. Chance of precipitation is 30%.
Sunday
Showers. High near 54. Southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
Sunday Night
Showers likely, mainly before 9pm. Mostly cloudy, with a low around 38. West wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Monday
Showers likely between 7am and 8am. Mostly sunny, with a high near 49. West wind around 9 mph. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 36. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 46. Light and variable wind becoming south 5 to 7 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 31. North wind 5 to 8 mph.
Wednesday
Sunny, with a high near 40. North wind 7 to 9 mph.
Wednesday Night
Mostly clear, with a low around 31. East wind around 5 mph becoming south after midnight.
Thursday
Sunny, with a high near 47. South wind 6 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Dennis MA
 41.69°N 70.16°W (Elev. 7 ft)
Last Update:
7:27 pm EDT Apr 2, 2026
Forecast Valid:
1am EDT Apr 3, 2026-6pm EDT Apr 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation